Fighter will take the best of the F-22, and even surpass it
Russian Su-57 with a motor of the second stage “article 30” It can be attributed not to the fifth generation, and to 5+. We did it on the basis of engine “product 20”, designed for the MiG-1.44, which was created in opposition to the American F-22, and in some characteristics even his superior. by the way, MiG-1.44 greatly “looks like” Chinese J-20, But that's another story.
As I noted in an interview with N + 1 General Designer OKB A. Cradles and developer “articles 30” Yevhen Marchuk, the proportion of the engine is 0,1. It means, that he can deliver ten times more power, than it weighs itself.
Specific fuel consumption “articles 30” about the same, as the AL-31F from the Su-27, However specific impulse above. AL-31F engine is considered to be economical with the flow 670 g per kilogram-force per hour cruising. for comparison, KMG-33 from the MiG-29 - is 770. А у Pratt & Whitney F119, which stands on the F-22, a lot more - 1,943 kg kilograms-force per hour.
The F-22 is very voracious, because they can fly at supersonic speed in besforsazhny mode. Judging by, that says Marchukov, Russian engine can be the same, Only in this case the fuel spends three times less. Some fiction.
Su-57 remains one of the most secret projects, so how Russian designers managed to achieve such a result, not reported.
According Marchukova, increase the specific impulse at the same fuel consumption managed through the use of new designs and technologies. Some of them are the chief designer nevertheless revealed. for example, plasma ignition system integrated in engine fuel injectors themselves (injectors). With this plasma arc ignition occurs simultaneously with the supply of kerosene.
Besides, an engine equipped with an electronic digital control system, which is fully responsible for the fuel injection control, air flow, ignition. This greatly simplifies machine operation.
We changed the engine nozzle design and air intake. Finally, in “articles 30” reduced radar signature, that foreign experts called almost the Achilles heel of the Su-57.
maybe, engine nozzle of the new Su-57 will be flat, like the F-22, a S-shaped duct also has lower ESR fighter. Developments underway, but the final decision is still pending. today's “articles 30” conventional nozzle.
The new Su-57 will appear in the VCS in the best case in the mid-2020s. Due to the repeated postponement of the adoption of the aircraft into service the aircraft did not criticize just lazy. Foreign media have repeatedly written, that Russian fighter - just a prototype, and the F-22 and F-35 - a real combat aircraft.
In some criticism, certainly, fair. Su-57, what is called, needed videoconferencing yesterday. Most of today's fighters are made on the basis of the Soviet “flanker” Su-27, and nothing fundamentally new Russian industry in this area is not created.
maybe, Only in the mid-2020s. Su-57 will be brought to mind. As long as things are moving slowly. VKS ordered 12 “fifty-seventh”, but they engines of the first stage. Western publications claim, that Russia is experiencing difficulties due to sanctions and the lack of technology, which refused to transfer the US and European countries. And so the project allegedly severely hampered.
However, the first production Su-57 videoconferencing should get this year. Of course, it goes without “articles 30”. However, it is not excluded, that the Defense Ministry will open greater opportunities airplane, especially weapons.
Alexander Ilyin
